Chrome Version       : 61.0.3163.123
OS Version: 9765.85.0

What steps will reproduce the problem?
1. Update ChromeOS
2. Log in

What is the expected result?
success

What happens instead of that?
During a never-before-seen interactive update progress bar, the update failed and said some files were corrupted. After rebooting, the main user could not successfully log in with password. I removed the user, and tried to relogin with the same account, but it leads to and endless cycle of asking for username, password, and token.